Michigan Highways Master List: 1918–Present

The Michigan Highways Master List is a complete catalogue of every state trunkline and Intercounty highway designation ever used in Michigan, from 1918 to today. This list was concieved out of many requests for information on route designations no longer in use, such as "Was there ever an M-41?" or "I heard about an ALTERNATE US-23. Was there such a thing?"

This page lists each designation in numerical order, from 1 through 696 followed by the Intercounty Highways, and is separated into listings generally corresponding to the setup of this website (e.g. 1-9, 10-19, etc.) for easier reference. Five 'types' of designations are included: current, unsigned, future and former routes, as well as those which have never been used to date. Each is color-coded, as shown in the "Highway Status Key" below. Current and Future route designations include a link to the regular listing on the website. The few Unsigned routes are also linked to a listing on the website. For those Formerly-Used designations, a short description of the former route is included for referencial purposes. Often, links to current highway listings are also included. Never-Used designations, of course, feature no description, as they have never existed in the system.

With an undertaking of this magnitude, there may be a designation or two which have been overlooked or mis-stated. I have combed through dozens of sources and literally hundreds of old road and street maps, so the information contained on this page is reasonably complete and accurate. However, if you should find any information which is incorrect, or if you know of a designation which has not been included here, please drop me a line at chris.bessert@gmail.com.

Michigan Highways Master List: 1918-Present

JUMP TO:	1-9 | 10-19 | 20-29 | 30-39 | 40-49 | 50-59 | 60-69 | 70-79 | 80-89 | 90-99 | 100-119
	| 120-139 | 140-159 | 160-179 | 180-199 | 200-229 | 230-696 | "TO" | Intercounty Routes
USX127XBUS	XCURX	X9999X9999XX
		HIGHWAY STATUS KEY
	CUR	Current highway designation
	UNS	Unsigned current highway designation
	FUT	Future highway designation
	FMR	Former highway designation no longer used
	NEV	Never-used as a state trunkline highway designation (only noted for state trunklines, from 1 through 229)
Route	Status	Extant	Description -or- Link to Route Listing
M-1	CUR	1970—Now	M-1 Listing
US-2	CUR	1926—Now	US-2 Listing
US-2 BUS	CUR	1942?—Now	IRONWOOD: BUS US-2 Listing
M-2	FMR	?—?	Description coming soon...
M-3 [I]	FMR	?—1939	M-3 Listing
M-3 [II]	CUR	1972—Now	M-3 Listing
M-4 [I]	FMR	?—1939	Original designation of M-134 in Mackinac and Chippewa Cos.
M-4 [II]	FMR	?—c1986	Original designation of M-10/Northwestern Hwy from I-696/US-24 to northern terminus.
M-5 [I]	FMR	1926—1939	M-5 Listing
M-5 [II]	CUR	1977—Now	M-5 Listing
M-6 [I]	FMR	1926—1939	M-6 Listing
M-6 [II]	FMR	1970s	M-6 Listing
M-6 [III]	CUR	1997—Now	M-6 Listing
M-7	FMR	?—1940	Original designation of M-86.
US-8	CUR	1926—Now	US-8 Listing
M-8	CUR	1993—Now	M-8 Listing
M-9	FMR	?—1940	Original designation of M-99 between Ohio state line and Lansing.
Route	Status	Extant	Description -or- Link to Route Listing
US-10	CUR	1926—Now	US-10 Listing
US-10A	FMR		Predecessor to today's BUS US-10 in Midland, albeit somewhat shorter.
US-10 BUS	CUR		REED CITY: BUS US-10 Listing
US-10 BUS	CUR		CLARE: BUS US-10 Listing
US-10 BUS	CUR		MIDLAND: BUS US-10 Listing
US-10 BUS	FMR	c1940—?	Originally the route of US-10 through downtown Flint, later designated M-10, then given the BUS US-10 designation when Business routes debuted in Michigan around 1940. Replaced by BUS M-54, now a locally-maintained street.
US-10 BUS	FMR		Originally US-10 throughthe center of Pontiac, designated BUS US-10 when US-10 replaced M-58. Now designated BUS US-24.
M-10	CUR		M-10 Listing
M-11	CUR		M-11 Listing
US-12	CUR		US-12 Listing
US-12A	FMR		Original route of US-12 along Michigan Ave between Kalamazoo and Comstock. Was decommissioned when M-96 replaced US-12 in this area.
US-12A	FMR		Original route of US-12 through downtown Battle Creek, designated as US-12A when US-12 bypassed the city center. Later designated BUS US-12.
US-12 BUS	FMR		NILES: FORMER BUS US-12 Listing
US-12 BUS	CUR		YPSILANTI: BUS US-12 Listing
US-12 BUS	FMR		BENTON HARBOR/ST JOSEPH:
US-12 BUS	FMR		KALAMAZOO: When the US-12 freeway was completed around Kalamazoo, the former route through downtown Kalamazoo was designated BUS US-12 for a time. Later changed to BL I-94.
US-12 BUS	FMR		BATTLE CREEK: Mostly replaced the US-12A routing through downtown Battle Creek. Removed when I-94/US-12 freeway was completed south of Battle Creek.
US-12 BUS	FMR		MARSHALL: Was designated for a short time before being replaced by BL I-94.
US-12 BUS	FMR		ALBION: Was designated for a short time before being replaced by BL I-94.
US-12 BUS	FMR		JACKSON: Was designated along much of the former route of US-12 through downtown when the US-12 "Jackson Bypass" was built in stages. Replaced by the current BL I-94 designation.
M-12	FMR	1918—1926	The pre-1926 designation of much of US-2 through the Upper Peninsula, from Ironwood to Sault Ste. Marie, with the exception of the portion from Crystal Falls to Sagola (now M-69) and Sagola to Iron Mountain (now M-95).
M-13	CUR		M-13 Listing
M-13 CONN	CUR		M-13 CONN Listing
M-14	CUR		M-14 Listing
M-15	CUR		M-15 Listing
US-16	FMR		Historic US-16 Listing
US-16A	FMR		FARMINGTON: An earlier designation for BUS US-16 through downtown Farmington.
US-16 ALT	FMR		GRAND HAVEN: In the early 1940s, after US-16 was relocated onto the direct route between Nunica and Muskegon, the former route via M-104 and US-31 was designated ALT US-16 for a short time.
US-16 BUS	FMR		GRAND RAPIDS: When US-16 was transferred onto the southern and western bypass of Grand Rapids (the former BYP US-16), the former route of US-16 through downtown Grand Rapids was designated BUS US-16.
US-16 BUS	FMR		FARMINGTON: For many years, the "Farmington Cut-Off" (now the M-5 freeway) was for eastbound traffic only, meaning the original route of US-16 along Grand River Ave through downtown Farmington retained the "official" routing of US-16. Later, when the "Cut-Off" was opened to two-way traffic and US-16 transferred to it, the former route of US-16 through Farmington was designated BUS US-16. Replaced by BL I-96 in the 1960s, now an unsigned state highway.
US-16 BYP	FMR		GRAND RAPIDS: When originally constructed, the "Grand Rapids Beltline System" was designated M-114. Later, the southern and western legs were given the BYP US-16 designation as an alternate route around downtown Grand Rapids. Later given the mainline US-16 designation, now designated M-11.
M-16	FMR		Ironically, what was to become US-16 in 1926 was originally designated M-16 in 1918. Ran along the present I-96 corridor from Grand Haven through Grand Rapids and Lansing, ending in Detroit.
M-17	CUR		M-17 Listing
M-17 BUS	FMR		YPSILANTI: When the BYP US-112 freeway opened around the south side of Ypsilanti (now I-94/US-12), M-17 was transferred to that route and the original route of M-17 through downtown Ypsilanti along Ecorse Rd, Michigan Ave and Washtenaw Ave was designated BUS M-17. Now designated M-17.
M-18	CUR		M-18 Listing
M-19	CUR		M-19 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-20	CUR		M-20 Listing
M-21	CUR		M-21 Listing
M-21A	FMR		A parallel route to M-21 along Lapeer Rd from US-10/Dort Hwy (now M-54) to M-15 at Davison. Likely utilized short sections of US-10 and M-15 to connect back with M-21 at either end. Now a locally-maintained road.
M-21 BUS	FMR		GRAND RAPIDS: When the M-21 desingation was transferred onto the routing of BYP M-21 around Grand Rapids, the former route of M-21 through the City of Grand Rapids was designated BUS M-21. While the eastern half of this route is now a locally-maintained street, the western half is now BS I-196.
M-21 BYP	FMR		GRAND RAPIDS: When originally constructed, the "Grand Rapids Beltline System" was designated M-114. Later, the eastern and southern legs were given the BYP M-21 designation as an alternate route around downtown Grand Rapids. Later given the primary M-21 designation , now designated as parts of M-37 and M-11.
M-22	CUR		M-22 Listing
US-23	CUR		US-23 Listing
US-23A	FMR		The Michigan State Highway Dept originally designated M-13 from Kawkawlin to Standish as ALT US-23 when the current I-75/US-23 freeway was completed in 1967. MSHD actually posted the former US-23 as "ALT US-23," but when that designation was not approved by the AASHTO, the department gave in and extended the M-13 designation along the route.
US-23A	FMR	c1929—c1931	Another short-lived US-23A designation existed from c.1929-1930 when a new US-23 routing was built on the east shore of the Saginaw River between Saginaw and Bay City. The former route was designated US-23A for only a short time, assumedly since the AASHTO declined to okay this new designation. By 1931, US-23A had been redesignated as part of M-47.
US-23 BUS	CUR		ANN ARBOR: BUS US-23 Listing
US-23 BUS	FMR		FENTON: Former BUS US-23 Listing
US-23 BUS	FMR		SAGINAW: When the eastern US-23 bypass around Saginaw was completed from Bridgeport to M-81, the former route of US-23 through the center of Saginaw was redesignated BUS US-23. When I-75 was routed along the bypass, BUS US-23 was redesignated as BL I-75.
US-23 BUS	FMR		BAY CITY: When US-23 was routed out of downtown Bay City to run west along present M-84/Salzburg Ave and north along present M-13/Euclid Ave, the former route of US-23 through downtown Bay City was designated as BUS US-23. Now designated, in parts, as M-84 and M-25/BS I-75.
US-23 BUS	CUR		ROGERS CITY: BUS US-23 Listing
M-23	FMR	1918—1926	M-23 the pre-1926 routing of US-12 from White Pigeon to Ypsilanti. Designated US-112 in 1926, and redesignated US-12 in 1961.
US-24	CUR		US-24 Listing
US-24A	FMR		The original US-24A in Monroe Co ran north from the Ohio state line via the Summit St extension to US-25 at Erie, then north for a short bit with US-24, then west on Luna Pier Rd to US-24. (This had been previously designated as US-25A.) Then, when the Detroit-Toledo Expressway was completed from the Ohio state line northerly past Monroe to the Woodhaven area of Wayne Co, it was designated US-24A. A few years later, US-24A was decommissioned in favor of the I-75 designation.
US-24 BUS	CUR		PONTIAC: BUS US-24 Listing
US-24 CONN	CUR		ERIE: CONN US-24 Listing
US-24 CONN	CUR		WOODHAVEN: CONN US-24 Listing
US-24 CONN	CUR		TAYLOR: CONN US-24 Listing
M-24	CUR		M-24 Listing
M-24A	FMR		The original routing of M-24 through downtown Pontiac. Redesignated as BUS M-24 when Business routings debuted in Michigan c.1940. This entire route was re-designated as BL I-75 when I-75 was completed around the east side of Pontiac in the 1960s.
M-24 BUS	FMR		PONTIAC: Originally M-24A through downtown Pontiac, but redesignated as BUS M-24 when Business routings debuted in Michigan c.1940. This entire route was re-designated as BL I-75 when I-75 was completed around the east side of Pontiac in the 1960s.
US-25	FMR		Historic US-25 Listing
US-25A	FMR		The original highway designation of the Summit St extension from the Ohio state line to US-25 at Erie in southeastern Monroe Co. Later redesignated US-24A.
US-25A	FMR		An alternate routing on the north side of Port Huron. Later the US-25 designation was transferred onto US-25A, supplanting that designation. Now designated as part of M-25.
US-25 BUS	FMR		PORT HURON: When I-94 was completed around the west side of Port Huron, US-25 was transferred to the new freeway, and the old routing of US-25 through downtown Port Huron was given the BUS US-25 designation. Later designated M-25, now BL I-94.
M-25	CUR		M-25 Listing
M-26	CUR		M-26 Listing
US-27	FMR	1926—2002	Historic US-27 Listing
US-27A	FMR		One of the earliest Alternate US Highways in the nation. The US-27 mainline ran northerly into St. Louis, while US-27A ran west into downtown Alma, then north back to US-27 west of St. Louis and north of Alma. When the US-27 freeway was completed at St. Louis and Alma in the 1960s, this US-27A routing was redesignated as BUS US-27, a "mirror-image" of St. Louis' BUS US-27.
US-27A	FMR		When US-27 was moved to a bypass routing west of Shepherd along Federal Rd, the former route through Shepherd was designated US-27A. This designation was dropped in the 1930s and was never designated BUS US-27.
US-27 BUS	FMR		MARSHALL: When the I-69/US-27 freeway was completed west of Marshall in the late-1960s, a BUS US-27 designation was commissioned along Michigan Ave from I-69/US-27 easterly into downtown Marshall, then northerly along the former US-27 to I-94. This designation survived for several years before being removed.
US-27 BUS	FMR		CHARLOTTE: The original routing of US-27 through downtown Charlotte, commissioned when the US-27 bypass was completed. Survived for a couple years after the coming of I-69, but was eventually replaced by the current BL I-69 routing.
US-27 BUS	FMR	?—2002	LANSING: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	ST JOHNS: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	ITHACA: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	ALMA: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	ST LOUIS: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	MOUNT PLEASANT: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	CLARE: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 BUS	FMR	?—2002	HARRISON: One of eight BUS US-27 routings replaced by a BUS US-127 designation when US-27 from Lansing northerly was redesignated as US-127 in 2002.
US-27 TR	FMR		For many years, there were two routings for US-27 and M-78 through downtown Lansing. The US-27/M-78 "Passenger Car Route" ran along Capitol Ave and Saginaw St. (This would be considered the "mainline" routing.) A US-27/M-78 "Truck Route" ran east on Main St, north on Grand Ave, east on Kalamazoo Ave and north on Larch St. TRUCK US-27/TRUCK M-78 was eventually replaced by the mainline US-27/M-78 when the Capitol Ave routing was given back to local control.
M-27	CUR		M-27 Listing
M-28	CUR		M-28 Listing
M-28A	FMR		The original route of US-41/M-28 through Ishpeming and Negaunee in Marquette Co. Was paired with US-41A at this time. Later replaced by the current BUS M-28 designation.
M-28A	FMR		The original route of M-28 through Newberry. Later redesignated as BUS M-28.
M-28 BUS	CUR		ISHPEMING/NEGAUNEE: BUS M-28 Listing
M-28 BUS	FMR		MARQUETTE: The original route of US-41/M-28 through downtown Marquette on Front and Washington Sts, and was paired with a BUS US-41 designation. While the BUS US-41 routing survives, BUS M-28 no longer runs through downtown Marquette.
M-28 BUS	FMR		NEWBERRY: Originally designated M-28A, earlier this was the original routing of M-28 through Newberry. Newberry's BUS M-28 was mostly given back to local control.
M-29	CUR		M-29 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-30	CUR		M-30 Listing
US-31	CUR		US-31 Listing
US-31A	FMR		The original routing of US-31 between Saugatuck and Holland. When a newer alignment was completed (the present-day A-2/Blue Star Hwy) between those cities, the old US-31 routing was redesignated as US-31A. The designation was dropped in the late-1930s.
US-31A	FMR		US-31A was the original downtown Muskegon bypass along Getty and Marquette Aves. Later, US-31 was transferred onto the US-31A alignment, and US-31A was moved onto the former US-31 routing through downtown Muskegon. US-31A was redesignated BUS US-31 in the 1940s, and retains that designation today.
US-31A	FMR		As with Muskegon, US-31 was the orignal bypass of Ludington along Pere Marquette Rd, while US-31 continued to jog through downtown Ludington. Later replaced by the mainline US-31 routing.
US-31A	FMR		A "business" routing through downtown Beulah. US-31A was a very short highway running one block west of US-31, and likely an original routing of US-31 through the city. Now a locally-designated street.
US-31 BUS	FMR		NILES: FORMER BUS US-31 Listing
US-31 BUS	FMR		ST. JOSEPH: Immediately after US-31 was transferred onto its current I-94 and I-196 bypass routing around St. Joseph and Benton Harbor, the former route of US-31 through downtown St. Joseph was designated BUS US-31. (BUS US-31 was paired with US-33 throughout.) This laster for only about a year and the route became just US-33, now designated M-63.
US-31 BUS	FMR		SOUTH HAVEN: When the original bypass of South Haven was completed in the 1940s, the former route of US-31 through downtown South Haven was designated BUS US-31. The southern half of this route is now part of BL I-196.
US-31 BUS	FMR		HOLLAND: FORMER BUS US-31 Listing
US-31 BUS	CUR		MUSKEGON: BUS US-31 Listing
US-31 BUS	CUR		WHITEHALL-MONTAGUE: BUS US-31 Listing
US-31 BUS	CUR		HART: BUS US-31 Listing
US-31 BUS	CUR		PENTWATER: BUS US-31 Listing
US-31 BUS	CUR		LUDINGTON: BUS US-31 Listing
M-31	FMR	1918—1926	M-31 was a pre-1926 highway. In 1920, M-31 began in Saginaw and ran easterly on present M-81 through Reese, then north through Gilford on Bradleyville Rd, then east again on present M-138 through Fairgrove and Akron. M-31 then turned north on present M-24 into Unionville and northeasterly along present M-25 through Sebewaing. South of Bay Port, M-31 turned east to follow the present M-142 through Bad Axe to M-27 (later M-51) west of Harbor Beach, where it ended. In 1923, M-31 continued east into Harbor Beach, then south along present M-25 through Port Sanilac and Lexington, ending in Port Huron. With the coming of US Highways in 1926, M-31 gave way to countless other designations and has not been used since, assumedly to minimize confusion with US-31.
M-32	CUR		M-32 Listing
M-32 BUS	CUR		BUS M-32 Listing
US-33	FMR	?—1998	Historic US-33 Listing
M-33	CUR		M-33 Listing
M-34	CUR		M-34 Listing
M-35	CUR		M-35 Listing
M-36	CUR		M-36 Listing
M-37	CUR		M-37 Listing
M-38	CUR		M-38 Listing
M-39	CUR		M-39 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-40	CUR		M-40 Listing
US-41	CUR		US-41 Listing
US-41A	FMR		The original route of US-41/M-28 through Ishpeming and Negaunee in Marquette Co. Was paired with M-28A at this time. Later replaced by the current BUS M-28 designation.
US-41 BUS	FMR		MARQUETTE: FORMER BUS US-41 Listing
US-41 BUS	FMR		BARAGA: The original route of US-41 through downtown Baraga. Existed at least during the 1940s. No longer a state highway.
M-41	FMR	1918—1926	A pre-1926 state highway designation. In 1920, M-41 began at M-24 (now M-120) between Holton and Fremont and continued north to Hesperia. From there, M-41 followed the route later designated M-82 from Hesperia via Ferry to Hart, where it ended. With the coming of US Highways in 1926, M-41 gave way to the M-82 designation and has not been used since, assumedly to minimize confusion with US-41.
M-42	CUR		M-42 Listing
M-43	CUR		M-43 Listing
M-43 BUS	FMR		GRAND LEDGE: When the current M-43 bypass routing around Grand Ledge was completed, the former route through downtown was designated BUS M-43 for a time.
M-44	CUR		M-44 Listing
M-44 CONN	CUR		CONN M-44 Listing
US-45	CUR		US-45 Listing
M-45	CUR		M-45 Listing
M-46	CUR		M-46 Listing
M-47	CUR		M-47 Listing
M-48	CUR		M-48 Listing
M-49	CUR		M-49 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-50	CUR		M-50 Listing
M-50 BUS	FMR		GRAND RAPIDS: Formerly routed through downtown Grand Rapids, when M-50 was moved to the "Grand Rapids Beltline system," the former route through downtown was designated as BUS M-50. It later re-attained the M-50 designation, then M-45, now mostly a local street.
M-51	CUR		M-51 Listing
M-52	CUR		M-52 Listing
M-53	CUR		M-53 Listing
M-54	CUR		M-54 Listing
M-54 BUS	FMR		FLINT: When US-10 was transferred to the I-75/US-23 freeway around the west side of Flint, US-10 in Genesee Co was redesignated M-54, and BUS US-10 through Flint was accordingly redesignated as BUS M-54. When the I-475/UAW Freeway was nearing completion, most of BUS M-54/Saginaw St was given back to local control and the BUS M-54 designation was removed.
M-55	CUR		M-55 Listing
M-55 BUS	FMR		HOUGHTON LAKE HEIGHTS: For many years, M-55 turned south to run concurrently with US-27, then turned east back to its current alignment at Houghton Lake, effectively bypass Houghton Lake Heights. The former route of M-55 throught the Heights bore the BUS M-55 during this timeframe. It is now part of the M-55 mainline again.
M-56 [I]	FMR		The iteration of M-56 began in Monroe, looped east of US-24 & US-25, crossed back over at Flat Rock and continued northwesterly via New Boston and Belleville, then north to end at present US-12 north of Belleville. Over time, the northern end of M-56 was realigned onto the M-112/Willow Run Expwy for a time, and was scaled back to end at New Boston (northern terminus) until it was eventually scaled back to Monroe. There, it stayed as a very short connector between M-125 in downtown Monroe and I-75, and was eventually redesignated as part of M-50.
M-56 [II]	FMR		Then, in the 1970s when M-21 was transferred to the M-78 (now I-69) freeway between Lennon and Flint, the former route of M-21 was redesignated as M-56. This lasted until the mid-1980s when M-21 was removed from I-69 and transferred back onto its previous alignment along Corunna Rd between Lennon and Flint.
M-57	CUR		M-57 Listing
M-58	CUR		M-58 Listing
M-59	CUR		M-59 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-60	CUR		M-60 Listing
M-60A	FMR		A very short-lived highway, existing at Concord in Jackson Co in 1933. Not only short-lived, it was a short highway in length as well, running along present Homer Rd and Hanover St, acting like a "Business route" into downtown Concord, while M-60 bypassed the center of town to the north. Given back to local control by 1934.
M-60 BUS	CUR		BUS M-60 Listing
M-61	CUR		M-61 Listing
M-62	CUR		M-62 Listing
M-63	CUR		M-63 Listing
M-64	CUR		M-64 Listing
M-65	CUR		M-65 Listing
M-66	CUR		M-66 Listing
M-67	CUR		M-67 Listing
M-68	CUR		M-68 Listing
I-69	CUR		I-69 Listing
I-69 BL	CUR		COLDWATER: BL I-69 Listing
I-69 BL	CUR		CHARLOTTE: BL I-69 Listing
I-69 BL	CUR		LANSING-EAST LANSING: BL I-69 Listing
I-69 BL	CUR		PORT HURON: BL I-69 Listing
I-69 TEMP	FMR	1973—1992	Existed from 1973 until 1992, connecting completed portions of I-69 in Mid-Michigan and likely the only route ever officially designated "TEMPORARY" in Michigan. In 1973, the portion of the M-78 freeway from Morrice to Flint was redesignated as part of I-69 and all of M-78 from Charlotte to Morrice was redesignated as TEMPORARY I-69. The route of TEMP I-69 followed US-27 from Charlotte to I-96 southwest of Lansing, ran easterly on I-96 to I-496/US-127, then north on I-496 and US-127 to Saginaw Rd, then northeasterly out of the Lansing area, connecting to the I-69 freeway Morrice. TEMP I-69 was cut into to pieces in 1987 when the portion of I-69 from I-96 southwest of Lansing in Eaton Co to Exit 94 north of Haslett in Clinton Co was designated as such. The portion of the former TEMP I-69 from US-127 to Exit 94 became part of a new BL I-69. The eastern segment of TEMP I-69 from Exit 94 to Morrice was replaced by a completed I-69 freeway in 1990, while the western segment of TEMP I-69 from Charlotte to I-96 was completely replaced by October 1992, when the final segment of I-69 was completed.
M-69	CUR		M-69 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-70	FMR	c1920s—1959	M-70 originally existed as a Prescott-Whittemore routing in the early-1920s, later adjusted to its "classic" routing, from M-76 at Sterling to M-55 near Prescott. That "classic" routing began in Sterling and continued north on Melita Rd to Main Street Rd, then east to Reed Rd, north again on Reed Rd, east for a mile on Maple Ridge Rd to Maple Ridge, then north on Briggs Rd into Ogemaw Co. In Ogemaw Co, M-70 ran northerly along Sage Lake Rd through Prescott, ending at M-55. It was decommissioned in 1959.
M-71	CUR		M-71 Listing
M-72	CUR		M-72 Listing
M-73	CUR		M-73 Listing
M-74	FMR		In 1920, M-74 existed as a "cut-off" route for M-14 (US-27's predecessor route) in Clare and Missaukee Counties. Beginning at M-14 north of Harrison, M-74 ran west to Leota, then northerly through Moddersville and Butterfield, ending at M-14 at Merritt. (During that time, M-14 bent west, then north from Houghton Lake to connect with M-13 south of Kalkaska, instead of continuing northerly past Houghton and Higgins Lakes toward Grayling.) In 1923, M-14 was routed to the east of Houghton and Higgins Lakes on the later route of US-27. The former route of M-14 in Missaukee Co from Merrit northerly to Moorestown, then west to Pioneer was redesignated as an extension of M-74.All of M-74 south of Moddersville (via Leota to M-14 north of Harrison) was turned back to local control in 1925, making M-74 a spur-route south of Merritt. The southern spur from Merritt to Moddersville was removed in 1938, with the remainder of M-74 being removed in 1939.
I-75	CUR		I-75 Listing
I-75 BL	FUT		MONROE: Proposed new route (under study/consideration).
I-75 BL	CUR		PONTIAC: BL I-75 Listing
I-75 BL	FMR		SAGINAW: When I-75 was designated around the east side of Saginaw, what had been designated BUS US-23 was redesignated as BL I-75. This routing lasted until the coming of I-675 in the 1970s.
I-75 BL	FMR		BAY CITY: See BL I-75 Listing
I-75 BS	CUR		BAY CITY: BS I-75 Listing
I-75 BL	CUR		WEST BRANCH: BL I-75 Listing
I-75 BL	CUR		ROSCOMMON: BL I-75 Listing
I-75 BL	CUR		GRAYLING: BL I-75 Listing
I-75 BL	CUR		GAYLORD: BL I-75 Listing
I-75 BL	CUR		ST IGNACE: BL I-75 Listing
I-75 BS	CUR		SAULT STE MARIE: BS I-75 Listing
M-75	CUR		M-75 Listing
M-76	FMR		M-76's earliest alignment around 1920 connected Standish with Roscommon via a very convoluted route running through Sterling, Maple Ridge, Prescott, Selkirk, West Branch and St Helen. In 1923, M-76 moved to a direct alignment between Standish and West Branch. In 1925, M-76 was extended northerly to Grayling, then westerly to Kalkaska. A short disconnected segment of M-76 opened near Empire in 1934. In 1940, M-76 was scaled back to end in Roscommon, with all of M-76—including the disconnected segment at Empire—west of Grayling beging redesignated M-72. During the late-60s and early-70s, the M-76 freeway was built in stages between Standish and I-75 south of Grayling, with segments opening in 1968, 1970 and 1971. Then, as the last segment was completed in 1973, all of the M-76 freeway was redesignated as I-75, and the M-76 designation has not been used since.
M-76 BUS	FMR		For a few years in the early-1970s, a BUS M-76 routing existed through downtown West Branch, originating when the M-76 freeway was completed in the area. In 1973, BUS M-76 was redesignated BL I-75 when M-76 was redesignated I-75.
M-77	CUR		M-77 Listing
M-78	CUR		M-78 Listing
M-78 BUS	FMR	1963—1970	LANSING: When M-78 was routed around Lansing via I-96 and I-496 in 1963, the former route through downtown Lansing was designated BUS M-78. The route lasted until 1970.
M-78 TRK	FMR		For many years, there were two routing of US-27 and M-78 through downtown Lansing. The US-27/M-78 "Passenger Car Route" ran along Capitol Ave and Saginaw St. (This would be considered the "mainline" routing.) A US-27/M-78 "Truck Route" ran east on Main St, north on Grand Ave, east on Kalamazoo Ave and north on Larch St. TRUCK US-27/TRUCK M-78 was eventually replaced by the mainline US-27/M-78 when the Capitol Ave routing was given back to local control.
M-79	CUR		M-79 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-80	CUR		M-80 Listing
M-81	CUR		M-81 Listing
M-82	CUR		M-82 Listing
M-83	CUR		M-83 Listing
M-84	CUR		M-84 Listing
M-85	CUR		M-85 Listing
M-86	CUR		M-86 Listing
M-87	FMR	c1920—1960	Always a shorter route, M-87 existed from c.1920 until 1960 connecting US-23 in Fenton with US-10 east of Holly.
M-88	CUR		M-88 Listing
M-89	CUR		M-89 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-90	CUR		M-90 Listing
M-91	CUR		M-91 Listing
M-92	FMR	c1920—1962	M-92 began in c.1920 as a route connecting Chelsea and Stockbridge and was later extended north to M-36. In 1953, M-92 was extended southerly via Manchester to Clinton. In 1962, all of M-92 was redesignated as an extension of M-52, and the designation has not been re-used since.
M-93	CUR		M-93 Listing
I-94	CUR		I-94 Listing
I-94 BL	CUR		BENTON HARBOR/ST JOSEPH: BL I-94 Listing
I-94 BL	CUR		KALAMAZOO: BL I-94 Listing
I-94 BL	CUR		BATTLE CREEK: BL I-94 Listing
I-94 BL	CUR		MARSHALL: BL I-94 Listing
I-94 BL	CUR		ALBION: BL I-94 Listing
I-94 BL	CUR		JACKSON: BL I-94 Listing
I-94 BL	CUR		ANN ARBOR: BL I-94 Listing
I-94 BL	CUR		PORT HURON: BL I-94 Listing
M-94	CUR		M-94 Listing
M-95	CUR		M-95 Listing
I-96	CUR		I-96 Listing
I-96 BL	CUR		LANSING: BL I-96 Listing
I-96 BL	CUR		HOWELL: BL I-96 Listing
I-96 BL	FMR		FARMINGTON: This was the original route of US-16 through downtown Farmington, later designated BUS US-16. When I-96 replaced US-16 along this route, BUS US-16 through Farmington was designated BL I-96. Then, when the current routing of I-96 was completed in the mid-1970s and the Farmington bypass was redesignated as M-102 (now M-5), the BL I-96 designation was removed, although Grand River Ave remains as an unsigned state highway.
I-96 BS	FMR		PORTLAND: Former BS I-96 Listing
I-96 BS	FMR		MUSKEGON: When the routings of I-96 and I-196 were swapped in the early-1960s, the BS I-196 routing in Muskegon was redesignated as BS I-96. The route lasted until the 1980s when it was removed, leaving the BUS US-31 behind.
I-96 BS	FMR		DETROIT: In 1962, when all of US-16 west of Farmington had been supplanted by either I-96 or I-196, the US-16 designation was removed from the state of Michigan, leaving the portion of Grand River Ave from Farmington into downtown Detroit "numberless." It was assigned the BS I-96 designation, which remained until the I-96/Jeffries Frwy was completed in 1977. The portion of BS I-96 northwest of 8 Mile Rd was designated M-102, while the portion southeast of there was designated M-5. The part of BS I-96 southeast of I-96 at EXIT 185 in Detroit along Grand River Ave is now an un-numbered state-maintained highway.
M-96	CUR		M-96 Listing
M-97	CUR		M-97 Listing
M-98	FMR	c1920s—1960	An east-west highway connecting M-77 at Germfask with M-28 south of McMillan, existing from the 1920s until 1960. Now a county route signed as H-44.
M-99	CUR		M-99 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-100	CUR		M-100 Listing
M-101	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-101 connected downtown Millersburg in Presque Isle Co with US-23 (now M-68) north of town.
US-102	FMR		Historic US-102 Listing
M-102	CUR		M-102 Listing
M-103	CUR		M-103 Listing
M-104	CUR		M-104 Listing
M-105	FMR	1928—1939	A "cut-off" connector route in Huron Co, running between M-53 southwest of Bad Axe and M-83 (now M-142) west of Bad Axe. M-105 ran along present-day Pinnebog Rd.
M-106	CUR		M-106 Listing
M-107	FMR		Former M-107 Listing
M-108	FMT		Former M-108 Listing
M-109	CUR		M-109 Listing
M-110	FMR		Former M-110 Listing
M-111 [I]	FMR	1928—1938	The first M-111 was a connector route from M-13 north of Bay City to Bay City State Park (now Bay City Recreation Area). In the early 30s, the highway was made to double-back on itself and run back into Bay City, and in the mid-30s, the original segment of M-111 (the west leg of the loop) was redesignated M-47. In 1938, the rest of M-111 was replaced by M-47.
M-111 [II]	FMR	1938—1940	When the remainder of M-111 near Bay City was replaced by M-47 in 1938, the designation was immediately transferred to the former M-6 routing from Phoenix to Eagle River in Keweenaw Co. Only two years later, M-111 in Keweenaw Co was replaced by a rerouted M-26, and the designation has not been used again since.
US-112	FMR		Historic US-112 Listing
US-112 BUS	FMR	?—1961	NILES: The former route of US-112 through downtown Niles. When US-12 replaced US-112 in 1961, BUS US-112 was redesignated BUS US-12.
US-112 BUS	FMR	1956—1961	YPSILANTI: In mid-1956, US-112 was transferred onto the Ypsilanti bypass routing (along with the addition of US-12) and the former route of US-112 through downtown Ypsilanti was designated BUS US-112. Upon US-112's removal from Michigan in 1961, BUS US-112 was redesignated BUS US-12.
US-112 BYP	FMR		YPSILANTI: As an extension to the Willow Run Expwy system constructed during World War II, BYP US-112 was completed around the south side of Ypsilanti in c.1944-45. It was later designated as part of the US-112 mainline, then later US-12, as it is today. In mid-1956, US-112 was transferred onto the bypass routing (along with the addition of US-12) and the former route of US-112 through Ypsilanti was designated BUS US-112.
US-112S	FMR	c1933—?	In c.1933, the portion of US-112 leading into Indiana was apparently designated "US-112S" in anticipation of Michigan extending the m.ainline of US-112 westerly via Niles to US-12 at New Buffalo. The short north-south segment of the highway leading into Indiana may have been designated "US-112S" in Michigan. This route later bore the designation M-205 and is now a county road named "Old M-205.".
M-112	FMR		When first constructed during World War II, the Willow Run and Detroit Industrial Expwys were designated M-112, due to the highway's relation to US-112 at either terminus. All of M-112 was redesignated US-12 in 1956, and the designation has not been used since.
M-113	CUR		M-113 Listing
M-114	FMR	1928—1943	M-114 was the original designation of what was to be the "Grand Rapids Beltline system," completely encircling the City of Grand Rapids. The first two segments of M-114—Wilson Ave from M-50 (now M-45) to US-16 (now Remembrance Ave), and 28th St from US-16 (now Cascade Rd) at Cascade to US-131 (now Division St)—were completed in 1928. In 1930, the western segment of M-114 was extended south from M-50 to M-21 (now Chicago Dr) in Grandville, and the southern leg was extended west from US-131 to Clyde Park Ave. In 1933, the East Beltline portion of M-114 was completed from US-131 south of Rockford to present 28th St southeast of Grand Rapids. Also, the southern leg of M-114 along present-day 28th St was extended west to meet the western leg of M-114, creating a three-sided beltline, with a spur to Cascade. Work began on the "North Beltline" segment of M-114, running east-west along 3 Mile Rd, with the portion from the "East Beltline" westerly to the Grand River being completed by 1942. It was at that time, however, that the south and west legs of the Beltline system were redesignated as BYP US-16, leaving M-114 on the east and partially-completed north legs. Sources show the partially-completed north leg of M-114 along today's 3 Mile Rd was turned back to local control in 1943, with the last remaining segment of M-114—the East Beltline portion—being redesignated as part of BYP US-131 in 1945. The M-114 designation has not been used since.
M-115	CUR		M-115 Listing
M-116	CUR		M-116 Listing
M-117	CUR		M-117 Listing
M-118	FMR		See M-222 Listing
M-119	CUR		M-119 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-120	CUR		M-120 Listing
M-121	CUR		M-121 Listing
M-122	FMR	1929—1957	Originally constructed as an access route to Straits State Park in St. Ignace, M-122 also served another purpose. The highway was built in 1929 to connect US-31 in downtown St Ignace at the State Highway Ferry Docks with the entrance to Straits State Park. By 1936, M-122's focus had shifted from providing access to the state park to providing access to the new state highway ferry docks in southeastern St. Ignace. US-2 was rerouted into St. Ignace at the same time, so M-122 essentially served as a connection between US-2 and the ferry docks. The highway was removed from the official highway map in mid-1952, although it seems the route may have held on in reality until the completion of the Mackinac Bridge in 1957.
M-123	CUR		M-123 Listing
M-124	CUR		M-124 Listing
M-125	CUR		M-125 Listing
M-126	FMR		US-16 originally ran due west from Nunica toward US-31 at Grand Haven. When a new highway was constructed along a former railroad line between Nunica and Muskegon, it was designated M-126. Later, the US-16 designation was shifted onto M-126, with the former US-16 into Spring Lake being assigned M-104. The M-126 designation has not been used since.
US-127	CUR	1926—Now	US-127 Listing
US-127A	FMR		When the original US-127 Mason bypass was completed, the former route of US-127 through downtown was designated US-127A. Later, this route would be redesignated BUS US-127 and elongated.
US-127 BUS	CUR		JACKSON: BUS US-127 Listing
US-127 BUS	FMR		MASON: Originally designated US-127A and ran through downtown Mason. This route was elongated slightly when the current US-127 bypass of Mason was completed. The southern half of BUS US-127 was eventually turned back to local control, and the northern half is now part of M-36.
US-127 BUS	UNS	2002—Now	LANSING: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	ST JOHNS: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	ITHACA: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	ALMA: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	ST LOUIS: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	MOUNT PLEASANT: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	CLARE: BUS US-127 Listing
US-127 BUS	CUR	2002—Now	HARRISON: BUS US-127 Listing
M-127	NEV	—	N/A
M-128	NEV	—	N/A
M-129	CUR		M-129 Listing
M-130	FMR	?—1955	M-130 was a somewhat curious route, as it parallel to, and within a mile of, M-50 heading westerly from Monroe. While M-50 followed the south side of the River Raisin, M-130 ran along the north side. Also a spur route, M-130 EXTENSION, existed near the route's western end. The entire route—spur and all—were turned back to local control in 1955.
M-130 EXT	FMR	?—1955	M-130 EXTENSION was a 2-mile spur along North Custer Rd extending west from M-130 at the the intersection of Ida-Maybee & North Custer Rds to Muehleisen Rd, in anticipation of an eventual US-23 realignment between Ida and Milan which never happened. It was turned back to local control in 1955.
US-131	CUR		US-131 Listing
US-131 BUS	CUR		THREE RIVERS: BUS US-131 Listing
US-131 BUS	CUR		KALAMAZOO: BUS US-131 Listing
US-131 BUS	CUR		GRAND RAPIDS: BUS US-131 Listing
US-131 BUS	CUR		BIG RAPIDS: BUS US-131 Listing
US-131 BUS	CUR		CADILLAC: BUS US-131 Listing
US-131 BUS	CUR		MANTON: BUS US-131 Listing
US-131 BYP	FMR	1945—1953	BYP US-131, a southern and eastern bypass of Grand Rapids, lasted less than a decade. In 1945, BYP US-131 was commissioned to run along the southern and eastern legs of the Grand Rapids Beltline system, with the mainline US-131 remaining through the center of the city. Then in mid-1953, the mainline designation was transferred onto the bypass, replacing the BYP US-131 designation forever. (The former US-131 through downtown was designated BUS US-131.)
M-131	FMR		See US-131 Listing
M-132	FMR	1929—1960	M-132 was a spur-route trunkline linking Ann Arbor and Dexter via Dexter-Ann Arbor Rd from 1929 to 1960, when it was trurned back to local control. One State Hwy Dept map also showed Wilson Ave between M-21/Chicago Dr & M-114/28th St in Grandville as a short connector designated M-132 in the late-1930s, but the Dexter-Ann Arbor route had been M-132 for a decade by that time and it is assumed this label was in error.
M-133	NEV	—	N/A
M-134	CUR		M-134 Listing
M-135	FMR	1928—1960	M-135 dates to 1928, and was a north-south highway in western Mackinac & Luce Counties along a route now designated H-33. It lasted until 1960 and was turned back to local control at the same time as adjacent route M-98.
M-136	CUR		M-136 Listing
M-137	CUR		M-137 Listing
M-138	CUR		M-138 Listing
M-139	CUR		M-139 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-140	CUR		M-140 Listing
US-141	CUR		US-141 Listing
M-141	NEV		N/A
M-142	CUR		M-142 Listing
M-143	UNS		M-143 Listing
M-144 [I]	FMR	1936—1940	The first M-144 debuted in 1936 and served as a short connector route from M-39/Michigan Ave (later M-43, now un-signed M-143) to the Michigan State Police Headquarters in East Lansing. Four years later in 1940, M-144 was transferred back to local control.
M-144 [II]	FMR	1940—1973	The M-144 designation was almost immediately transferred onto what had been previously designated M-72 from M-76 east of Roscommon to M-72 near Luzerne. A few realignments from the late-40s to the early-60s brought M-144's termini to downtown Roscommon and M-72 near Eldorado. When the completion of I-75 in 1973 made M-18's route northwest of Roscommon unnecessary, it was transferred onto the route of M-144, completely supplanting it. The M-144 designation has not been used since.
M-145	FMR		The M-145 designation was to be used for a western bypass of the City of Jackson which was never completed. M-145—which would have likely been redesignated as M-50 or BYP M-50 if completed—was to begin at M-50 near Vandercook Lake and run arc westerly, northwesterly and northerly around the City of Jackson, connecting back with M-50 northwest of Jackson. One section of highway was acutally designated M-145 (on paper, if not in reality): Springport Rd between Airport Rd and Rives Junction Rd. This proposed bypass was likely dropped in the 1950s in favor of the eastern (now US-127) freeway bypass.
M-146	FMR	1933—?	M-146 dates to 1933 when a north-south M-21 Connector route along 24th St in western Port Huron between US-25 (later M-25, now BL I-94) and M-21 (now Lapeer Rd). In 1954, a new approach highway was constructed leading away from the Blue Water Bridge, arcing southwesterly to M-21/Lapeer Rd and was designated M-146, connecting with the existing M-146 routing by jogging east on M-21. This new approach route was converted to freeway in c.1958. In 1964, much of the newer freeway portion of M-146 was assumed into the I-94/US-25 freeway, while the westernmost portion of that freeway section of M-146 became somewhat of a glorified off-ramp from I-94, but retaining the M-146 designation. At that time, though, the original 24th St alignment of M-146 was turned back to local control. At some point after that—possibly when the M-21 freeway spur was completed—the M-146 desingnation was dropped and has not been re-used since.
M-147	FMR	1936—c1991	M-147 was a short highway connecting M-106 with the State Prison of Southern Michigan just northeast of Jackson. It was in existence from 1936 to c.1991, when it was turned back to local control.
M-148	NEV	—	N/A
M-149	CUR		M-149 Listing
M-150	CUR		M-150 Listing
M-151 [I]	FMR	1931—1935	In 1931, M-151 was designated along previously county-maintained roads from US-112 (at present-day jct of US-12 & Old M-205) to Niles, roughly along the route of today's US-12. In early 1935, a second M-151 is designated from US-223 near Ottawa Lake easterly via Samaria, ending at US-25 (now M-125) at Erie. Simultaneously, the original M-151 is technically redesignated as an extension of US-112 into Niles, although the M-151 markers on the original route may have remained until later in 1935. By 1935, the original M-151 is officially relegated to history.
M-151 [II]	FMR	1935—1977	The second iteration of M-151 was designated in January 1935 from US-223 to US-25 in southern Monroe Co. In mid-November 1965, all of M-151 east of US-23 was turned back to local control, with the remainder of M-151 being replaced by a rerouted US-223 in 1977.
M-152	CUR		M-152 Listing
M-153	CUR		M-153 Listing
M-154	CUR		M-154 Listing
M-155	UNS		OLD M-155 Listing
M-156	CUR		M-156 Listing
M-157	CUR		M-157 Listing
M-158	FMR	1934—1936?	In early 1934, M-9 (later M-99) was routed in southern Hillsdale Co thusly: north on Pioneer Rd, west on Burt Rd, jogging at Goose Neck Bend, north on Clark Rd, west on Montgomery Rd through Frontier, then north on Hillsdale Rd into Hillsdale. In 1934, an M-158 loop was under construction north on Pioneer Rd from Burt Rd to Montgomery Rd, then west on Montgomery back to M-9 at Frontier, effectively making it a loop from M-9. Later in 1934, it seems the routing of M-9 was transferred to the new M-158, but the M-158 routing continued to appear on official highway maps until 1936! The M-158 designation has not been re-used since.
M-159	NEV	—	N/A
Route	Status	Extant	Description -or- Link to Route Listing
M-160	FMR	c1941—1942	At the beginning of World War II, the State Highway Dept constructed a new roadway leading into Selfridge Field (now Selfridge Air National Guard Base) from M-29 running along the present-day line of I-94 east of Mt Clemens. The highway turned back to local control in 1942, only about a year after it was created.
M-161	NEV	—	N/A
M-162	FMR	c1935—1939	An extremely-short highway leading from M-94 (now M-28) into the center of Au Train, in Alger Co west of Munising. Existed from c.1935-1939.
M-163	NEV	—	N/A
M-164	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-164 connected downtown Snover in Sanilac Co with M-19 east of town.
M-165	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-165 connected downtown Ovid in Clinton Co with M-21 south of town.
M-166	FMR		M-166 began as one of many very short state highway spur routes connecting a downtown district with a nearby state highway, but was extended later. In this case, M-166 originally connected downtown Lyons in Ionia Co with M-21 north of town. Later, M-166 was extended east, then south to end at US-16 (later BS I-96/Grand River Ave) in Portland. M-166 was eventually transferred to local control and the designation has not been used since.
M-167	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-167 connected downtown Saranac in Ionia Co with M-21 north of town.
M-168	FMR	1931—2012	FORMER M-168 Listing
M-169	FMR		During the time when US-27 still bypassed Houghton and Higgins Lakes on the east (via Prudenville and Roscommon), M-169 existed as a "cut-off" route between US-27 and M-55 west of Houghton Lake Heights. It was later replaced by M-55 when the former route of that highway through Houghton Lake Heights was designated BUS M-55, and still later became part of US-27 when the western Houghton Lake bypass was completed (now Old US-27).
M-170	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-170 connected downtown McMillan in Luce Co with M-28 south of town.
M-171	FMR	1932—1960	M-171 debuted in 1932 as a loop route off US-23, beginning in northern Alcona Co, looping northwesterly through Spruce, then north and northeast to meet back with US-23 southwest of downtown Alpena. In late-1934, that route was turned back to local control, but was brought back in late-1936 (or early-1937) along the former inland route of US-23 from Oscoda to near Spruce. M-171 was removed in 1960 and its former route received the F-41 designation in 1970.
M-172	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-170 connected downtown Middleville in Barry Co with M-37 on the east side of town. This was when M-37 entered the area via State Rd and E Main St, then turned northerly to leave town via Grand Rapids St and Whitneyville Rd. M-172 ran along Main St from Grand Rapids St westerly into the downtown district.
M-173 [I]	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-173 connected downtown Orleans in Ionia Co with M-44 north of town in the mid-1930s.
M-173 [II]	FMR	1939—1972	M-173 was the last of three highway designations to be applied to the route through downtown Menominee from the Ann Arbor Railroad ferry docks to US-41. This third designation—replacing the M-35 routing through downtown—existed from 1939 to 1972 and was likely removed after the carferry stopped running from Elberta to Menominee.
M-174 [I]	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-174 connected downtown Buchanan in Berrien Co with US-112 (now US-12) south of town.
M-174 [II]	FMR		Originally designated M-120, the portion of Logan St (now M L King Jr Blvd) in Lansing from Grand River Ave to the Ingham/Clinton Co line was designated M-174 for many years. It was turned back to local control in the early-1970s.
M-175	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-175 connected downtown Galien in Berrien Co with US-112 (now US-12) south of town.
M-176	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-176 connected downtown Durand in Shiawassee Co with M-71 north of town.
M-177	FMR	1936—1939	M-177 replaced the M-46 designation along Michigan Ave from US-27/M-46 in downtown St Louis to US-27A (now BUS US-27) just east of downtown Alma in late 1936. M-177 lasted until late-1939.
M-178	FMR		In the 1930s, M-28 ran across central Alger Co along the present-day route of M-94, while M-94 ran north from Shingleton along today's H-15, then west into Musining on today's H-58, continuing toward AuTrain along present-day M-28. This created a 1-mile state highway between M-94 in downtown Munising and M-28 near Wetmore, which was given the M-178 designation in mid-1934. In 1941, the routes of M-28 and M-94 west of Munising were swapped to their present routings, eliminating the M-178 designation.
M-179	CUR		M-179 Listings
Route	Status	Extant	Description -or- Link to Route Listing
M-180	FMR	1933—1935	M-180 was the first of three highway designations to be applied to the route through downtown Menominee from the Ann Arbor Railroad ferry docks to US-41. This first designation existed from 1933 to mid-1935 and was replaced by the M-35 designation.
M-181	FMR	1933—1955	M-181 began as a short spur route leading into downtown Metamora from M-24 in Lapeer Co in 1933, but was extended to M-53 north of Almont in late-1935. M-181 was turned back to local control in mid-1955 and the designation has not been used since.
M-182	NEV	—	N/A
M-183	CUR		M-183 Listing
M-184	FMR	c1930s—c1939	M-184 debuted in the mid-1930s beginning at M-89 east of Richland continuing along 40th St and C Ave to the Kellogg Bird Sanctuary (now the Kellogg Biological Station). It was removed around 1939.
M-185	CUR		M-185 Listing
M-186	CUR		M-186 Listing
M-187	NEV	—	N/A
M-188	CUR		M-188 Listing
M-189	CUR		M-189 Listing
M-190	NEV	—	N/A
M-191	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-191 connected downtown Fenwick in Montcalm Co with M-14 east of town.
M-192	NEV	—	N/A
M-193	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-193 connected downtown Morrice in Shiawassee Co with M-78 north of town.
I-194	CUR		I-194 Listing
M-194	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-194 connected downtown New Lothrup in Shiawassee Co with M-13 east of town.
M-195	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-195 connected Henderson in Shiawassee Co with M-52 east of town.
I-196	CUR		I-196 Listing
I-196 BL	CUR		SOUTH HAVEN: BL I-196 Listing
I-196 BL	CUR		HOLLAND/ZEELAND: BL I-196 Listing
I-196 BS	CUR		WYOMING/GRAND RAPIDS: BS I-196 Listing
I-196 BS	FMR		MUSKEGON: When I-196 was completed to US-31 near Muskegon, the BS I-196 designation was added to BUS US-31 leading from the end of I-196 to downtown Muskegon. When the routings of I-96 and I-196 were swapped in 1963, the BS I-196 routing in Muskegon was redesignated as BS I-96.
M-196	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-196 connected downtown Hersey in Osceola Co with US-10 north of town.
M-197	NEV	—	N/A
M-198	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-198 connected downtown Lakeview in Montcalm Co with M-46 south of town.
M-199	CUR		M-199 Listing
Route	Status	Extant	Description -or- Link to Route Listing
M-200	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-200 connected downtown Stephenson in Menominee Co with US-41 on the east side of town.
M-201	CUR		M-201 Listing
M-202	NEV	—	N/A
M-203	CUR		M-203 Listing
M-204	CUR		M-204 Listing
M-205	FMR		FORMER M-205 Listing
M-206	FMR		One of many very short state highway spur routes around the state, usually connecting a downtown district with a nearby state highway bypassing the center of the city. In this case, M-206 connected downtown Eagle Harbor and the Eagle Harbor Lighthouse in Keweenaw Co with M-26 on the south side of town.
M-207	NEV	—	N/A
M-208	FMR		M-208 existed along a 13-mile stretch of present-day M-72 from US-27 (now BL I-75) in Grayling to the "Wakeley Bridge" over a branch of the Au Sable River in southeast Crawford Co. When the connection between the Wakeley Bridge and M-72 at Eldorado was completed in late-1940 or early-1941, M-72 was rerouted westerly, replacing M-208 in its entirety into Grayling. The M-208 designation has not been re-used since.
M-209	FMR		For many years, M-209 was a very short spur highway leading from the 90-degree bend in M-109 at Glen Haven, northerly through the one-time community of Glen Haven, ending at the access road to the Coast Guard Lifesaving Station. M-209 was 0.4 mile in length, meaning it was 0.3 mile SHORTER than the current shortest state highway, M-212, which clocks in at 0.7 mile. M-209 was turned back to local control in c.1995-96.
M-210	FMR		After the M-21 southern bypass of Pewamo was completed, the former route of M-21 was designated M-210 and served as a "business route" of sorts through the center of the village. Later, the route of M-210 was turned back to local control, and the designation has never been re-used.
M-211	CUR		M-211 Listing
M-212	CUR		M-212 Listing
M-213 [I]	FMR		The first M-213 was a 14-mile highway running along present-day B-35 from M-46 east of Muskegon to M-20 (now M-120) at Brunswick, east of Holton. It was turned back to local control in c.1959-60.
M-213 [II]	FMR		The second M-213 was immediately christenend along what had been M-20 from US-31 (now Whitehall Rd) in North Muskegon to Muskegon State Park. This North Muskegon-to-Muskegon State Park route survived until 1970 when it was turned back to local control.
M-214	FMR	1934—1953	M-214 dated to late-1934 when the former M-79 route from west of Nashville to downtown Vermontville was re-designated M-214. (At this time, M-66 through Ionia Co was designated M-14.) The highway was later scaled back from Vermontville to end in downtown Nashville, serving as a 3-mile connector route along today's M-79 from M-79 west of Nashville to M-14 in Nashville. M-214 survived M-14's redesignation as M-66 in 1941 by about a decade, until it was supplanted by a rerouting of M-79 in 1953.
M-215	FMR		M-215 was a 7-mile route running from US-12 in Lawrence to M-43 just east of Bangor in Van Buren Co. It was turned back to local control (becoming Co Rd 215) in late-1953 or early-1954.
M-216	CUR		M-216 Listing
M-217	CUR		M-217 Listing
M-218	FMR		Originally, M-218 began at US-16 (now Grand River Ave) in "West Novi" (part of the present City of Wixom), running north along Wixom Rd to Wixom, east on Fourteen Mile Rd (now Pontiac Trail) to Walled Lake, then northeasterly on Walled Lake Rd (now also Pontiac Trail) via Orchard Lake and Keego Harbor, ending at M-58 (later US-10, now US-24) southwest of downtown Pontiac. In c.1937, M-218 was extended into downtown Pontiac. In 1963, the entire route was transferred to local control. Extensions of M-218 southwesterly through South Lyon to US-12 at Chelsea and northeasterly via Utica to US-25 at Richmond were proposed in the 1930s, but never built. These extensions would have turned M-218 into a de facto Detroit bypass route.
M-219	FMR		M-219 was one of several highways whose sole purpose was to connect the various railroad and carferry docks with the state highway system. Others were located in Menominee, St Ignace, Elberta, Ludington, Muskegon, etc. Commissioned in the mid-1930s, M-219 lasted until c.1966 as the Ann Arbor Railroad slowly decreased the number of ferry sailings from Elberta to Manistique, ending the service in 1967.
M-220	NEV	—	N/A
M-221	CUR		M-221 Lisitng
M-222	CUR		M-222 Listing
US-223	CUR		US-223 Listing
US-223 BUS	CUR		BUS US-223 Listing
M-223	NEV	—	N/A
M-224	NEV	—	N/A
M-225	NEV	—	N/A
M-226	NEV	—	N/A
M-227	CUR		M-227 Listing
M-228	NEV	—	N/A
M-229	NEV	—	N/A
Route	Status	Extant	Description -or- Link to Route Listing
For route designations from "230" and higher, only those routes which currently exist, previously existed, or will exist in the near future are listed. For any designation from "230" and higher where no listing is indicated, it can be assumed no such designation has ever existed in Michigan
M-231	FUT	c2015—	Future M-231 Listing
M-239	CUR		M-239 Listing
M-247	CUR		M-247 Listing
I-275	CUR		I-275 Listing
M-294	CUR		M-294 Listing
I-296	UNS		I-296 Listing
M-311	CUR		M-311 Listing
M-331	UNS		M-331 Listing
I-375	CUR		I-375 Listing
I-375 BS	UNS		BS I-375 Listing
I-475	CUR		I-475 Listing
I-495	CUR		I-496 Listing
I-496 CL	CUR		CAPITOL LOOP Listing
M-553	CUR		M-553 Listing
M-554	FMR		FORMER M-554 Listing
I-675	CUR		I-675 Listing
I-696	CUR		I-696 Listing
I-696 BS	FMR	c1961—1970	The completed portion of the John C Lodge Expwy was given the BS I-696 designation in c.1961-62, even before the actual I-696 was completed and open to traffic! In 1963, the rest of the Lodge Frwy was completed out to the newly-completed I-696 in Southfield, and the entire Lodge Frwy/Northwestern Hwy freeway was designated BS I-696. BS I-696 was replaced by US-10 in 1970.
Route	Status	Extant	Description -or- Link to Route Listing
TO I-75	FMR		This "TO I-75" designation existed in Metro Detroit while I-75 was being constructed through the city. In the field, this route was posted with "TO I-75" route marker assemblies as opposed to simply posting "I-75" markers alone or as a "TEMP I-75" routing. The first "TO I-75" routing at Detroit began at the current US-24 CONNECTOR in Taylor, continuing north on US-24/Telegraph Rd to M-102/Eight Mile Rd, then east on M-102 to Stephenson Hwy, turning north on Stephenson (formerly M-150) to 11 Mile Rd, where a completed segment of I-75 picked back up. The second routing began at the I-75 & M-39/Southfield Rd interchange at Lincoln Park, continuing north on M-39/Southfield Rd & Frwy to M-102/Eight Mile Rd, then east on M-102 to I-75. A disconnected part of "TO I-75" existed between 9 Mile and 11 Mile Rds. The M-39/M-102 portion of "TO I-75" was "decommissioned" in 1969, with the short 9 Mile-to-11 Mile Rd section remaining until 1971.
TO I-75	FMR		This "TO I-75" designation existed in Central Michigan while I-75 was being constructed from Bay City to Grayling. In the field, this route was posted with "TO I-75" route marker assemblies as opposed to simply posting "I-75" markers alone or as a "TEMP I-75" routing "TO I-75" began at the jct of US-10, US-23 & M-25 west of Bay City, continued westerly along US-10 to Clare, then northerly along US-27 from Clare to the completed portion of I-75 south of Grayling. "TO I-75" lasted until I-75 was completed along its present route in 1973.
TO I-75	FMR		This "TO I-75" designation existed in Central Michigan while I-75 was being constructed from Bay City to Grayling. In the field, this route was posted with "TO I-75" route marker assemblies as opposed to simply posting "I-75" markers alone or as a "TEMP I-75" routing According to the Official Michigan Transportation Map, "TO I-75" began in 1961 along what had been US-27 from Gaylord to just north of Indian River near Topinabee, lasting only about a year when I-75 was completed along the stretch in the Fall of 1962.
TO I-94	FMR		The "TO I-94" designation existed in Metro Detroit while I-94 was being constructed in southeastern Macomb Co. In the field, this route was posted with "TO I-94" route marker assemblies as opposed to simply posting "I-94" markers alone or as a "TEMP I-94" routing "TO I-94" began at the end of I-94 at M-102/Vernier Rd in Harper Woods, continuing west on M-120 to US-25/Gratiot Ave, then north on US-25/Gratiot Ave to Metropolitan Pkwy, then easterly back to a completed segment of I-94. In 1964, "TO I-94" was moved from Metropolitan Pkwy south to 14 Mile Rd. In 1966, when I-94 was completed through southeastern Macomb Co, the "TO I-94" designation was removed.
Intercounty Highway Routes
Route	Status	Extant	Description -or- Link to Route Listing
A-2	CUR	1970—Now	A-2 Listing
A-37	CUR	1977—Now	A-37 Listing
A-42	CUR	1982—Now	A-42 Listing
A-45	CUR	1972—Now	A-45 Listing
B-1	FMR	1970—1971	The original designation for H-40 in the Upper Peninsula from 1970. During the pilot year for the Intercounty Highway System program, A-2 in Allegan Co and B-1 in Mackinac and Chippewa Cos were designated, signifying the original intent was to have "A" routes in the Lower Peninsula and "B" routes in the U.P. When additional routes were added in 1971, the current eight-zone configuration was implemented and B-1 became H-40. It is assumed B-1 was fully signed in the field during its one year of existence.
B-15	CUR	1971—Now	B-15 Listing
B-23	CUR	1971—Now	B-23 Listing
B-31	CUR	1971—Now	B-31 Listing
B-35	CUR	1971—Now	B-35 Listing
B-72	CUR	1971—Now	B-72 Listing
B-86	CUR	?—Now	B-86 Listing
B-88	FMR	?—1998	Connected M-37 at White Cloud with US-131 at Stanwood. Was completely assumed into the route of M-20 when the route of B-88 was transferred to state control from Mecosta and Newaygo Cos in 1998 as part of the short-lived "Rationalization" program.
B-96	CUR	?—Now	B-96 Listing
C-38	CUR	?—Now	C-38 Listing
C-42	CUR	?—Now	C-42 Listing
C-48	CUR	?—Now	C-48 Listing
C-56	CUR	?—Now	C-56 Listing
C-58	CUR	?—Now	C-58 Listing
C-64	CUR	?—Now	C-64 Listing
C-65	CUR	?—Now	C-65 Listing
C-66	CUR	?—Now	C-66 Listing
C-71	CUR	?—Now	C-71 Listing
C-73	CUR	?—Now	C-73 Listing
C-77	CUR	?—Now	C-77 Listing
C-81 [S]	CUR	?—Now	C-81 [South Segment] Listing
C-81 [N]	CUR	?—Now	C-81 [North Segment] Listing
Route	Status	Extant	Description -or- Link to Route Listing
D-19	CUR	?—Now	D-19 Listing
D-32	CUR	?—Now	D-32 Listing
F-01	CUR	?—Now	F-01 Listing
F-05	CUR	?—Now	F-05 Listing
F-7	UNS		One of the "Ogemaw Co" routes which may have never been signed in the field and may have never been "officially" recognized by MDOT.
F-9	UNS		One of the "Ogemaw Co" routes which may have never been signed in the field and may have never been "officially" recognized by MDOT. Ran along Old M-76 southeast of West Branch.
F-17	FMR		One of the "Ogemaw Co" routes which were once signed in the field and featured on the state official transportation map but were removed from the map in the 1980s and seem to no longer be "officially" recognized by MDOT.
F-18	CUR	?—Now	F-18 Listing
F-19	FMR		One of the "Ogemaw Co" routes which were once signed in the field and featured on the state official transportation map but were removed from the map in the 1980s and seem to no longer be "officially" recognized by MDOT.
F-20	FMR		One of the "Ogemaw Co" routes which were once signed in the field and featured on the state official transportation map but were removed from the map in the 1980s and seem to no longer be "officially" recognized by MDOT. Portion in Iosco Co was assumedly signed while it was depicted on the official transportation map, but became a "former" route in that county.
F-21 [S]	UNS		One of the "Ogemaw Co" routes which may have never been signed in the field and may have never been "officially" recognized by MDOT.
F-21 [N]	CUR	?—Now	F-21 Listing
F-24	UNS		One of the "Ogemaw Co" routes which may have never been signed in the field and may have never been "officially" recognized by MDOT.
F-26	FMR		One of the "Ogemaw Co" routes which were once signed in the field and featured on the state official transportation map but were removed from the map in the 1980s and seem to no longer be "officially" recognized by MDOT. Portion in Iosco Co was assumedly signed while it was depicted on the official transportation map, but became a "former" route in that county.
F-28	CUR	?—Now	F-28 Listing
F-30	CUR	?—Now	F-30 Listing
F-32	CUR	?—Now	F-32 Listing
F-38	CUR	?—Now	F-38 Listing
F-41	CUR	?—Now	F-41 Listing
F-42	CUR	?—Now	F-42 Listing
F-44	CUR	?—Now	F-44 Listing
F-97	CUR	?—Now	F-97 Listing
G-08	CUR	?—Now	G-08 Listing
G-12	CUR	?—Now	G-12 Listing
G-18	CUR	?—Now	G-18 Listing
G-38	FMR		Former G-38 Listing
G-67	FMR		Former G-67 Listing
G-69	CUR	?—Now	G-69 Listing
H-01 [S]	CUR	?—Now	H-01 [South Portion] Listing
H-01 [N]	CUR	?—Now	H-01 [North Portion] Listing
H-03	CUR	?—Now	H-03 Listing
H-05	CUR	?—Now	H-05 Listing
H-09	UNS	?	H-09 Listing
H-11	CUR	?—Now	H-11 Listing
H-13	CUR	?—Now	H-13 Listing
H-15	CUR	?—Now	H-15 Listing
Route	Status	Extant	Description -or- Link to Route Listing
"H-16"	NEV		"H-16" Listing
H-33	CUR	?—Now	H-33 Listing
H-37	CUR	?—Now	H-37 Listing
H-40	CUR	?—Now	H-40 Listing
H-42	CUR	?—Now	H-42 Listing
H-44 [W]	CUR	?—Now	H-44 [West Portion] Listing
H-44 [E]	CUR	?—Now	H-44 [East Portion] Listing
H-52	CUR	?—Now	H-52 Listing
H-57	CUR	?—Now	H-57 Listing
H-58	CUR	?—Now	H-58 Listing
H-60	UNS	?	H-60 Listing
H-63	CUR	?—Now	H-63 Listing
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